Complete Encyclopaedia of Music/A/Accidental
Accidental. An epithet applied to such accessory sharps, flats, or naturals as do not appertain to the original key of any piece ; something non-essential, as songs are accidental to a play.
Accidental. An epithet applied to such accessory sharps, flats, or naturals as do not appertain to the original key of any piece ; something non-essential, as songs are accidental to a play.